Chemistry: Atoms First (2nd Edition)

Published by Cengage Learning
ISBN 10: 1305079248
ISBN 13: 978-1-30507-924-3

Chapter 1 - Exercises - Page 51c: 41

Answer

a. $^{23}_{11}$Na b. $^{19}_{\space 9}$Fe c. $^{16}_{\space 8}$O

Work Step by Step

The atomic number is the number of protons and the mass number is the sum of number of protons and neutrons. We have: a. $^{23}_{11}$Na b. $^{19}_{\space 9}$Fe c. $^{16}_{\space 8}$O
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